From Mobile Suit Gundam: The Witch from Mercury, the Demi Trainer is a mass-produced training mobile suit designed for pilot instruction and field readiness. Built with simplicity and robustness in mind, the Demi Trainer reflects a functional design philosophy focused on reliability rather than cutting-edge performance, making it a common sight in training and support roles throughout the series.
The HG Demi Trainer brings this practical machine into 1/144 scale with a build approach centered on clarity and structural stability. The kit features a straightforward joint system that supports natural movement in the arms and legs while maintaining a compact, balanced stance. Armor parts are cleanly molded with clear separation, preserving the machine’s industrial aesthetic without relying heavily on stickers.
What builders tend to appreciate most is the Demi Trainer’s simplicity and solid feel. Its compact frame makes posing intuitive, while the restrained design highlights the mechanical form without unnecessary complexity. Combined with a smooth build flow and a distinctive, utilitarian silhouette, the HG Demi Trainer delivers a satisfying High Grade experience that stands out through practicality and character rather than spectacle.
Included Accessories
Training Rifle ×1
Shield ×1
Interchangeable Hands ×2
Decal Sheet ×1
General Specifications
| Manufacturer | Bandai |
| Kit Grade | High Grade (HG) |
| Model | MSJ-121 Demi Trainer |
| Anime Appearance | Mobile Suit Gundam: The Witch from Mercury |
| Finished Height | Approx. 12–13 cm |
| Parts Count | Medium |
| Recommended Skill Level ** | Beginner to Intermediate |
| Estimated Build Time * | Approx. 2–3 hours |
| Box Dimensions | Approx. 30 × 19 × 7 cm |
| JAN | 4573102633569 |
Notes
* Estimated build time is based on parts count, kit grade, and in some cases Mecha Universe staff build experience. It is provided as a general reference only and should not be considered an absolute value.
** All kits share the same fundamental assembly principles and difficulty level. However, depending on the number of parts, part size, and overall complexity, some kits may be more comfortable for beginner, intermediate, or advanced modelers. This classification is provided solely as a guidance indicator based on Mecha Universe staff experience. Beginners can start with any kit, including more complex releases.
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